The interior of the church is equally captivating, featuring high vaulted ceilings, ornate altars, and beautiful frescoes depicting scenes from the life of Christ and the Virgin Mary. The serene ambiance provides a perfect setting for prayer and reflection. The church grounds include a grotto dedicated to Our Lady of Lourdes, reminiscent of the original grotto in France, where believers can light candles and offer prayers.
Our Lady of Lourdes Church stands as a significant landmark in Tiruchirappalli, symbolizing the city's rich religious and cultural heritage. It continues to be a place of pilgrimage, drawing visitors from all over the world.